The polar ice caps have melted, and the earth is covered by water. The remaining people travel the seas, in search of survival. Several different societies exist. The Mariner falls from his customary and solitary existence into having to care for a woman and a young girl while being pursued by the evil forces of the Deacon. - Robbie Smith, IMDb
Great character interaction between the Mariner & Enola, especially the scene where he teaches her to swim. A great metaphore - on many levels - it's the anchor point for the film as the story & the relationship developes. Enola, as it turns out, is the central plot point of the film. On one side is pure information & control and on the other is basic Human values. Disturbing that a child is that controlling value, ( the fact that she can be considered as barter, as well the object of desire ) but also endearing... as in the endearing hope of an innocent child.